Bottle stopper



FIG. 1 is a perspective view of a bottle stopper showing our new design in the opened position;

FIG. 2 is a left side elevation view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a rear elevation view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a front perspective view thereof showing the bottle stopper in the closed position. 

The ornamental design for a bottle stopper, as shown and described. 